Novel In-Situ Electrolytes for Electrochemical Capacitors

用于电化学电容器的新型原位电解质

• 批准号: 463487968
• 负责人: Professor Dr. Andrea Balducci
• 金额: --
• 依托单位: Institut für Technische Chemie und Umweltchemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/463487968?language=en
• 关键词: Novel; Situ; Electrolytes; Electrochemical; Capacitors

Electrical double layer capacitors (EDLCs) are nowadays considered among the most important energy storage devices. In these devices the energy is physically stored, through the formation of an electric double-layer at the interface between (polarized) electrodes and ions of the electrolyte Carbon-based materials are currently the state-ofthe- art electrode materials in EDLCs. These materials, however, are produced by means of multi-step syntheses associated with a high energy demand and an excessive accumulation of waste and byproducts. This is in sharp contrast with the core idea of sustainable energy production and storage. In this project we aim to design carbon syntheses in such a way that the formed by-products are not treated as waste products, but instead generate a salt suitable for the realization of EDLCs. Thus, the by-products contribute to the functionality of the desired final product and waste accumulating purification steps are by-passed completely. For that reason, we call this approach the ’in situ electrolyte‘ concept. Combining the expertise on porous carbon development of the Borchardt group with the expertise on electrolyte design of the Balducci group we target the following aspects: Firstly, understanding the underlying principles of in situ electrolyte concept by investigating different activation agents, super acids and precursor materials, secondly, to utilized this strategy for the realization of lithium and sodium-based electrolytes, thirdly advancing the concept to metal-ion capacitors and fourthly developing a 3rd generation in situ electrolyte concept, in which even the electrolyte solvent can be generated from the waste products of carbon syntheses.

双电层电容器（edlc）是当今最重要的储能器件之一。在这些装置中，通过在（极化）电极和电解质离子之间的界面上形成双电层来物理存储能量。碳基材料是目前edlc中最先进的电极材料。然而，这些材料是通过多步骤合成的方式生产的，这与高能量需求和废物和副产品的过度积累有关。这与可持续能源生产和储存的核心理念形成鲜明对比。在这个项目中，我们的目标是设计碳合成的方式，使形成的副产品不被当作废物处理，而是产生适合实现edlc的盐。因此，副产品有助于所需的最终产品的功能，废物积累的净化步骤被完全绕过。因此，我们称这种方法为“原位电解质”概念。结合Borchardt集团在多孔碳开发方面的专业知识和Balducci集团在电解质设计方面的专业知识，我们的目标是：首先，通过研究不同的活化剂、超强酸和前驱体材料，了解原位电解质概念的基本原理；其次，利用这一策略实现锂基和钠基电解质；第三，将这一概念推进到金属离子电容器；第四，开发第三代原位电解质概念，其中甚至电解质溶剂都可以从碳合成的废物中产生。